QSI · Insider trading · 13F holders · Congress trades
Quantum-Si Inc (QSI)
Who is buying and selling QSI: company insiders on SEC Form 4, hedge funds and superinvestors on Form 13F, and members of Congress under the STOCK Act. Every figure links to the filing or page it comes from.
- 13F filers holding
- 1
- Insider buys, 90 days
- $0
- Insider sales, 90 days
- $39K
- Congress trades, 12 months
- 0
QSI at a glance
- Between Aug 1, 2026 and Oct 29, 2026, 3 QSI insiders filed 3 sales worth $39K on SEC Form 4, and no open-market purchases.
- 1 13F filer hold QSI among their 50 largest positions, worth $658K combined. The biggest bets by portfolio weight are Fosun International Ltd (0.1%).
- No member of Congress has disclosed a trade in QSI.
- QSI last closed at $1.75 on Oct 29, 2026.
QSI insider trading
Between Aug 1, 2026 and Oct 29, 2026, 3 QSI insiders filed 3 sales worth $39K on SEC Form 4, and no open-market purchases.
| Filed | Insider | Role | Trade | Shares | Price | Value | Form 4 |
|---|---|---|---|---|---|---|---|
| Sep 23, 2026 | Hawkins Jeffrey Alan | President & CEO, Director | Sale | 29,852 | $0.76 | $23K | SEC |
| Sep 23, 2026 | LaPointe Christian | GC & Corp. Secretary | Sale | 14,516 | $0.76 | $11K | SEC |
| Sep 23, 2026 | Keyes Jeffry R. | Chief Financial Officer | Sale | 7,665 | $0.76 | $6K | SEC |
Who owns QSI? Hedge funds and superinvestors
1 13F filer hold QSI among their 50 largest positions, worth $658K combined. The biggest bets by portfolio weight are Fosun International Ltd (0.1%).
| Manager | % of portfolio | Value | Shares | Last quarter | 13F |
|---|---|---|---|---|---|
| Fosun International LtdInvestment manager | 0.1% | $658K | 743,935 | +0.0% shares | Q2 2026 |
Each manager counts with its latest 13F (Q2 2026: 1). Screen QSI in the grand portfolio →
QSI stock trades by members of Congress
No member of Congress has disclosed a trade in QSI.
QSI questions and answers
Are insiders buying QSI stock?
Between Aug 1, 2026 and Oct 29, 2026, 3 QSI insiders filed 3 sales worth $39K on SEC Form 4, and no open-market purchases.
Which hedge funds own QSI?
1 13F filer hold QSI among their 50 largest positions, worth $658K combined. The biggest bets by portfolio weight are Fosun International Ltd (0.1%).
Has Congress traded QSI?
No member of Congress has disclosed a trade in QSI.
Who is the largest holder of QSI?
Among 13F filers, Fosun International Ltd reports the largest QSI position, $658K (743,935 shares) in its Q2 2026 13F. The biggest bet by portfolio weight is Fosun International Ltd's: 0.1% of its portfolio.
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